Running time calculator

Enter a known distance and time, and your target distance. We will predict your time for the target distance.

Distance A Angstrom AU barleycorn bolts of cloth cable caliber chains(Gunter's) chains(Ramden's) cm cubits dam dkm dm ells fath fathoms fermi ft ft(US survey) ft+in fur furlongs Gm hands hm in km leagues(Br naut) leagues(int naut) leagues(statute) light years lines(Br) links(Gunter's) links(Ramden's) m micromicrons microns miles miles(Br,naut) miles(int,naut) miles(Irish) miles(old Scottish) miles(Roman) miles(US,naut) mils mm nail nm paces palms parsecs perch pica(printer's) point(printer's) poles quarters(Br linear) rd rods ropes skeins spans thou u uin yd

Time centuries days days(sidereal) decades fortnight hr hr(sidereal) millenia min min(sidereal) months(mean) ms ns s s(sidereal) shake synodic month us weeks years years(calendar) years(mean calendar) years(sidereal) years(tropical)

Target distance A Angstrom AU barleycorn bolts of cloth cable caliber chains(Gunter's) chains(Ramden's) cm cubits dam dkm dm ells fath fathoms fermi ft ft(US survey) ft+in fur furlongs Gm hands hm in km leagues(Br naut) leagues(int naut) leagues(statute) light years lines(Br) links(Gunter's) links(Ramden's) m micromicrons microns miles miles(Br,naut) miles(int,naut) miles(Irish) miles(old Scottish) miles(Roman) miles(US,naut) mils mm nail nm paces palms parsecs perch pica(printer's) point(printer's) poles quarters(Br linear) rd rods ropes skeins spans thou u uin yd   

This calculator is intended for distance running and is not suitable for sprint distances. Marathon distance is 42.2k, half-marathon is 21.1k. To see your actual pace, set the target distance equal to your actual distance.